欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數資料
型號: TPS51221RTVRG4
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩壓器
英文描述: DUAL SWITCHING CONTROLLER, 333 kHz SWITCHING FREQ-MAX, PQCC32
封裝: 5 X 5 MM, GREEN, PLASTIC, QFN-32
文件頁數: 24/39頁
文件大小: 829K
代理商: TPS51221RTVRG4
RCnetwork
nexttoIC
Currentsensing
Device
TPS51221
InnerSignal-GNDisland
0 W resistor
GND
Toinner
Power-GND
layer
Toinner
Signal-GND
island
#28
GND-pin
SLVS786A – NOVEMBER 2007 – REVISED MARCH 2009............................................................................................................................................... www.ti.com
sensing comparator inputs (CSPx and CSNx). (see Figure 48)
Figure 48. Current Sensing Traces
Use small copper space for VFBx, in other words short and narrow traces to avoid noise coupling
Connect VFB resistor trace to the positive node of the output capacitor.
Use signal GND for VREF2 and VREG3 capacitors, RF and VFB resistors and the other sensitive analog
components. Placing signal GND island (underneath the IC and fully covered peripheral components) on the
internal layer for shielding purpose is recommended. (See Figure 49)
Use thermal land for PowerPAD. Five or more vias with 0.33-mm (13-mils) diameter connected from the
thermal land to the internal GND plane should be used to help dissipation. Do NOT connect GND-pin to this
thermal land on the surface layer, underneath the package.
Routing (power portion)
Use wider/ shorter traces of DRVL for low-side gate drivers to reduce stray inductance.
Use the parallel traces of SW and DRVH for high-side MOSFET gate drive and keep them away from DRVL.
Connect SW trace to source terminal of the high-side MOSFET.
Use power GND for VREG5, VIN and Vout capacitors and low-side MOSFETs. Power GND and signal GND
should be connected near the IC GND terminal. (See Figure 49)
Figure 49. GND Layout Example
30
Copyright 2007–2009, Texas Instruments Incorporated
Product Folder Link(s): TPS51221
相關PDF資料
PDF描述
TPS51315RGFR SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PQCC40
TPS51315RGFT SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PQCC40
TPS51317RGBT SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PQCC20
TPS51317RGBR SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PQCC20
TPS51427ARHBR DUAL SWITCHING CONTROLLER, PQCC32
相關代理商/技術參數
參數描述
TPS51221RTVT 功能描述:電流型 PWM 控制器 Fixed Freq Notebook Sys Pwr Dual Cntrlr RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
TPS51221RTVTG4 功能描述:電流型 PWM 控制器 Fixed Freq Notebook Sys Pwr Cntrlr RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
TPS51222 制造商:TI 制造商全稱:Texas Instruments 功能描述:Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller
TPS51222RTVR 功能描述:電流型 PWM 控制器 Fixed-Freq,Notebook Sys Pwr Cntrlr RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
TPS51222RTVT 功能描述:電流型 PWM 控制器 Fixed-Freq,Notebook Sys Pwr Cntrlr RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
主站蜘蛛池模板: 绍兴县| 张家口市| 大渡口区| 鄂州市| 基隆市| 额济纳旗| 丹阳市| 舒城县| 阿荣旗| 昌图县| 开原市| 静海县| 和田市| 都江堰市| 遂宁市| 三明市| 阿瓦提县| 凤庆县| 扎赉特旗| 盈江县| 石景山区| 大方县| 积石山| 仙桃市| 蒙自县| 辉南县| 中山市| 崇信县| 库伦旗| 宝丰县| 拉孜县| 姚安县| 三门峡市| 乌兰县| 连城县| 诸暨市| 太谷县| 大宁县| 台中县| 斗六市| 湛江市|